Knowledge of Cornerstone or Portfolio extended warranty

I have cornerstone in a Winnebago 2004 38 r, after owning it for 9 mos, the 4 door fridge went out. Needed a cooling unit replaced. The dealer didn't find the problem. I found a rv refridgeration place who replaced the cooling unit in my norcold 4 door, 1200 for1700.00. I paid 100.00 deductable, that's it. No problems at all, rv refrigeration called with diagnosis and got on their warranty list for repairs and 2 days later it was being repaired. A happy camper!